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Finding the Fourth Proportional to 455,605.70, 628,741.86 and 251,656.02

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Solution

The fourth proportional to 455,605.70, 628,741.86 and 251,656.02 is: 347,288.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,605.70 : 628,741.86 = 251,656.02 : x
  2. Step 2: Convert to fraction form
    455,605.70/628,741.86 = 251,656.02/x
  3. Step 3: Cross multiply
    455,605.70x = 628,741.86 × 251,656.02
  4. Step 4: Simplify right side
    455,605.70x = 158,226,674,095.00
  5. Step 5: Solve for x
    x = 158,226,674,095.00/455,605.70
  6. Step 6: Final answer
    x = 347,288.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.